Issue Printing Double-sided

P

PDX

I have a Excel file that when I try and print all tabs (50
tabs / 140 pages) the Lanier printer wont't print double
sided (defaults to single side)

*** Yet when I print the first few tabs, it does
pring "Double-Sided/Duplex".****

What may be happening later in the file that causes the
printer "not" to print duplex?

The file uses the same print quality, page size and
oreintation.

Thanks
 
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